<html>
<body>
<script>

var name = location.search.substring(1);
addEventListener('load', function() {
  setTimeout(function() {
    alert(name + ':ready');
  }, 0);
});

addEventListener('visibilitychange', function() {
  alert(name + ':' + (document.hidden ? 'hidden' : 'visible'));
});

</script>
</body>
</html>
